/Engine/Source/Runtime/CoreUObject/Public/UObject/SparseDelegate.h
Registers the sparse delegate so that the offset can be determined.
static void RegisterDelegateOffset ( const [UObject](API\Runtime\CoreUObject\UObject\UObject) * OwningObject, [FName](API\Runtime\Core\UObject\FName) DelegateName, size_t OffsetToOwner )